Rotational relaxation time of polyelectrolyte xanthan chain via single molecule tracking method
- Authors
- Lee, Jeong Yong; Jung, Hyun Wook; Hyun, Jae Chun
- Issue Date
- 12월-2012
- Publisher
- KOREAN SOC RHEOLOGY
- Keywords
- xanthan; rotational relaxation time; Brownian dynamics; polyelectrolytes; single molecule tracking
- Citation
- KOREA-AUSTRALIA RHEOLOGY JOURNAL, v.24, no.4, pp.333 - 337
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- KOREA-AUSTRALIA RHEOLOGY JOURNAL
- Volume
- 24
- Number
- 4
- Start Page
- 333
- End Page
- 337
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/106826
- DOI
- 10.1007/s13367-012-0040-z
- ISSN
- 1226-119X
- Abstract
- Effect of solvent viscosity on the longest rotational relaxation time of xanthan molecule has been examined using a single molecule tracking method. Incorporating inverted epi-fluorescence microscope and chargedcoupled device (CCD) camera, various features of xanthan (i.e., radius of gyration, orientation angle, etc.) were interpreted by image processing algorithm from the captured real xanthan images. From the best-fit of the autocorrelation function on the orientation angle, the longest rotational relaxation time was effectively determined. Rotational relaxation time increases with the medium solvent viscosity due to the slow movement of xanthan molecule. It is confirmed that there is a good agreement between experiments and Brownian dynamics simulations on the relaxation patterns of xanthan chain.
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Collections - College of Engineering > Department of Chemical and Biological Engineering > 1. Journal Articles
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